This beetle was spotted on a stem of California Buckwheat (
Eriogonum fasciculatum) at the Claremont Colleges’
Robert J. Bernard Biological Field Station. I wondered if it might be a metallic wood-boring beetle (Buprestidae)? Any information about its identity will be greatly appreciated!
Update:
Richard Westcott, who identified this beetle to species,
notes that "the occurrence of this species on wild buckwheat undoubtedly is incidental, not indicative of a host plant. All known host plans are composites, family Asteraceae."